comp 4

Question 1

Two-dimensional arrays have _____.

Answer 1

two or more columns of values.

Question 2

The two dimensions represent the ____

Answer 2

height and width of the array.

Question 3

Mathematicians also use two dimensional array and they call it ____

Answer 3

matrix or a table.

Question 4

Tech-savvy people often call _______

Answer 4

2D arrays as spreadsheet

Question 5

_______ often call 2D arrays as spreadsheet

Answer 5

Tech-savvy people

Question 6

Declaration

Answer 6

Syntax: datatype[][] variable = new datatype[i][j];

i represents the ROWS

j represents the COLUMNS

Question 7

Same as the 1D Array, if you do not provide values for the elements in a 2D array, to its default value.

Answer 7

?

Question 8

Initialize a two-dimensional array with _____

Answer 8

values when it is created.

Question 9

A method that receives a two-dimensional array uses_______

Answer 9

two bracket pairs following the data type in the parameter list of the method header.

Question 10

There is ______ to insert numbers into the brackets because each passed array name is a starting memory address.

Answer 10

no need

Question 11

The way you manipulate subscripts within the method determines

Answer 11

how rows and columns are accessed

Question 12

We can also use the ____ in our 2D Array.

Answer 12

length field

Question 13

a 2D array that has rows of different lengths.

Answer 13

Jagged array or ragged array

Question 14

jagged array can also be called as

Answer 14

non-rectangular array

Question 15

arrays with more than one dimension.

Answer 15

Multidimensional arrays

Question 16

When you are programming in Java, you can use _______ dimensions in an array.

Answer 16

four, five, or more

Question 17

Java provides an Arrays class, which contains ___

Answer 17

many useful methods for manipulating arrays.

Question 18

Arrays class is inside ____

Answer 18

java.util package.